A benchmark score is a numeric performance rating from a standardized test suite (Geekbench, AnTuTu, 3DMark) that allows direct comparison across devices.
Common benchmarks: Geekbench 6 (CPU single/multi-core), AnTuTu (overall device, weighted CPU+GPU+memory), 3DMark Wild Life / Steel Nomad (graphics), Cinebench (laptop CPU rendering), Cross-Mark (productivity).
Real-world performance often deviates from benchmarks because thermal throttling kicks in over sustained loads. Look for "stress test" scores or 30-min sustained performance, not just peak.
Use benchmarks to compare similar devices (phone vs phone), not across categories (laptop CPU vs phone SoC differ in test load).